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JavaScript Events

JavaScript Events

JavaScript events trigger code when users interact with the page.

Read Time
5 min read
Difficulty
Beginner
Last Updated
Jun 15, 2026
Version
v1.0.0

Introduction

JavaScript listens for specific actions happening on the HTML page. Developers write code that waits for a user to click a button, type in an input field, or scroll down the page, and then reacts instantly.

Example

Example
1/* this triggers an event */
2<button onclick="alert('Clicked!')">Click Me</button>

Key Points

  • Events detect user interaction.
  • The `onclick` event triggers when the user clicks an element.
  • The `onmouseover` event triggers when the mouse hovers over.
  • The `onkeydown` event triggers when typing.

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